Re: [PATCH v13 07/12] crypto: Add RSASSA-PSS support

[Eric Biggers]

On Tue, Jan 20, 2026 at 11:15:57PM +0000, David Howells wrote:
> Eric Biggers <ebiggers@xxxxxxxxxx> wrote:
> 
> > As I mentioned in another reply, error-prone string parsing isn't a
> > great choice.  C has native support for function parameters.
> 
> But is constrained that it has to work with KEYCTL_PKEY_VERIFY's info
> parameter.

The cover letter of this patchset summarizes it as "These patches add
ML-DSA module signing and RSASSA-PSS module signing."  Adding
KEYCTL_PKEY_VERIFY support for these algorithms would be a significant
new UAPI feature that would need its own justification and its own
documentation and test updates.

However, it was established pretty clearly in past discussions that
KEYCTL_PKEY_* are a mistake and basically exist only for backwards
compatibility with iwd.

So I don't understand why you're advocating for adding new features to
them.

- Eric